Invalid&#39;s chair with brake



g- 1947. K. D. HAMMAcK 2,426,451

INVALIDS CHAIR WITH BRAKE Filed June 21, 1946 Q Quill/ l w" ....m/HHHI!INVENTOR. KENNETH o. HAMMAC'K,

Patented Aug. 26, 1947 UNITED STATES PATENT OFFICE 2 Claims.

The present invention relates to invalids chairs tachment for rollingchairs whereby they can be held in a stationary position while acrippled person gets in or out.

The primary object of the invention is to provide a device of thecharacter referred to which will enable a crippled person to get in andout of it readily without assistance.

Another object of the invention is to provide a simple and inexpensivedevice of the character referred to, wherein the novel features can beinstalled in an ordinary rolling chair with slight changes.

A further object of the invention is to provide a rolling chair of thecharacter referred to of simpler and more compact construction thanprior devices.

With the foregoing and other objects and advantages in view theinvention consists of the novel construction and arrangement of partshereinafter described and claimed.

In the accompanying drawings illustrating the preferred embodiment ofthe invention,

Figure 1 is a side elevation of a rolling chair equipped with thehelping means hereinbefore mentioned,

Figure 2 is a side elevation of the attachment with parts in section toshow how they are assembled,

Figure 3 is a top plan view thereof.

Like numerals, as used in the description and drawings, designate thesame structural parts.

This device to aid invalids, especially cripples, in the use of arolling chair Ill of conventional type, without assistance, is designedprimarily for attachment to the arm rest II and enables one to hold thechair in a stationary position when getting in or out. It may beattached to either arm rest as desired,

The attachment consists of an elongated spring metal strip I2, the innerend of which is secured to the underside of the arm rest longitudinallyby two removable bolts I3 positioned adjacent such end thus allowing thefront of the strip to be depressed.

Mounted on the outer end of the spring metal strip is a wooden block I4with its inner end beveled, as at I5, to fit an inwardly beveled edge onthe front end of the arm rest. This block is wider than the metal stripand fashioned to be a continuation of the arm rest, which is shortenedso that the forward end of said block will not extend beyond the end ofthe other arm rest.

On the underside of the spring metal strip and below the block I4 i abrake shoe consisting of a metal plate I6, substantially as wide as themetal strip I2, and a depending, arcuate layer I! of rubber or othersuitable material for a brake shoe. This brake shoe is positionedcontiguous to the rubber tire of the chair wheel I8.

I Passing downwardly through the block I4 and threaded into registeringscrew holes in the spring metal strip I2 and plate I6 of the brake shoe,are two screw bolts I8, positioned longitudinally of the block to fastenthe said parts together.

The foregoing construction produces a sectional arm rest normally likethe other one in general appearance and can be so constructed at thefactory.

When the user desires to get in or out all that is required to hold thechair in a stationary position while he does so is to press the block I4down, thus putting the brake shoe on the wheel firmly. This will preventthe chair from rolling and causing an invalid or cripple to lose balanceand probably fall. When the hand is removed, the spring metal strip I2will return the block I4 to normal position as a part of the arm rest.

As different embodiments may be made of this inventive concept andmodifications may be made in the embodiment hereinbefore shown anddescribed, it will be understood that the matter herein is to beinterpreted as illustrative merely, and not in a limiting sense.

What I claim is:

1. An invalids chair provided with front and rear traction wheels andarm rest contiguous to the front wheels, a strip of spring metal securedadjacent its inner end to the underside of an arm rest, a brake shoeattached to the underside of said strip of spring metal contiguous to afront wheel of the chair and a block attached to the upper side of saidstrip adjacent the forward end thereof, said block fashioned'as acontinuation of the arm rest and positioned to adjoin the forward end ofthe arm rest.

2. An invalids chair provided with front and rear traction wheels andarm rests contiguous to the front wheels, a strip of spring metalsecured adjacent its inner end to the underside of an arm rest, a brakeshoe attached to the underside of said strip of spring metal to impingethe adjacent front wheel, a wooden block fashioned as a continuation ofthe arm rest and attached to the upper side of said spring metal stripcontiguous to the front end of said arm rest, the abutting edges of thearm rest and block being beveled to form a miter joint and permit theblock to be depressed.

KENNETH D. HAMMACK.

